Cadillac 2009 STS, Owner'S Manual

Page: 204 / 514

-
(Defog): This mode clears the windows of fog
or moisture. Air is directed to the windshield and floor
outlets, with some air directed to the side windows and
outboard panel outlets. When this mode is selected,
the system turns off recirculation and runs the
air-conditioning compressor unless the outside
temperature is at or below freezing. If recirculation
is selected while in the defog mode, it is cancelled
after 10 minutes.
If there is fogging on the side windows, remain in defog or
defrost mode until they clear.
0
(Defrost): This mode clears the windshield of fog
or frost more quickly. Air is directed to the windshield,
with some air directed to the side windows and outboard
panel outlets. The air-conditioning compressor runs
automatically in this setting, unless the outside
temperature is at or below freezing. Recirculation
cannot be selected while in the defrost mode.
This mode can also cause the fan speed and air
temperature to increase.
^
(Air Conditioning): Press to turn the air
conditioning off. Press AUTO to return to automatic
operation. To limit fogging on the windshield, the
air conditioning compressor cannot be off while in
the defrost mode.
h
(Recirculation): Press once to select recirculation
mode or twice to select outside air. If in AUTO mode,
press
h
once to select recirculation. This mode
recirculates and helps to quickly cool the air inside
the vehicle. It can be used to prevent outside air
and odors from entering the vehicle.
Recirculation is not available in the defrost mode and
shuts off when defog mode is selected. Both of these
features are designed to limit fogging in the vehicle.
If recirculation is selected during defog mode,
it automatically turns off after 10 minutes.
Using the recirculation for long periods of time might
cause the air inside the vehicle to become too dry or
stuffy. To prevent this from happening, after the air in
the vehicle has cooled, press the recirculation button
again to select outside air or press the AUTO button.
3-50